Partial boot after installing Manjaro on emmc
On the U-Boot splash screen it says:
I deduce that U-Boot is loaded from the SPIFlash memory, and not from the emmc.
On the pinebook pro wiki it says:
I deduce that:
On the wiki it is also written:
It is therefore possible to deactivate SPIFlash by overwriting the memory (software deactivation)
However, it is necessary to check on U-Boot is installed on the emmc or SD card, before overwriting the SPIFlash memory, otherwise the Pinebook pro will not restart.
For this I can, "short pin 6 of the SPI flash to GND and boot" and see if the pinebook pro reboots.
Do you think this is the right solution?
Quote:Loading environment from SPIFlash...
I deduce that U-Boot is loaded from the SPIFlash memory, and not from the emmc.
On the pinebook pro wiki it says:
Quote:The Pinebook Pro comes with a 128Mbit, (16MByte), flash device suitable for initial boot target, to store the bootloader. The SoC used on the Pinebook Pro boots from this SPI flash device first, before eMMC or SD card. At present, April 19, 2020, the Pinebook Pros ship without anything programmed in the SPI flash device. So the SoC moves on to the next potential boot device, the eMMC. ARM/ARM64 computers do not have a standardized BIOS, yet.
[...]
Even if you need to recover from a defective bootloader written to the SPI flash, you can simply short pin 6 of the SPI flash to GND and boot. This will render the SoC bootrom unable to read from the SPI flash and have it fall back to reading the bootloader from other boot media like the eMMC or Micro SD card.
The procedures described above are a lot less risky than attaching an external SPI flasher and do not require any additional hardware. At present, April 19th, 2020, there is no good bootloader image to flash into the SPI flash device. This is expected to change, as there are people working on issue.
https://wiki.pine64.org/wiki/Pinebook_Pr...ash_device
I deduce that:
- manjaro-arm-installer presumably installed U-Boot on SPIFlash when installing Manjaro on the emmc.
- This version of U-Boot is unsuitable for SPIFlash.
- I can disable the SPIFlash to try to start U-Boot on the emmc or on the SD card (hardware deactivation).
On the wiki it is also written:
Quote:Zeroing out the SPI
In case, you wrote something bad to your SPI, it's helpful to wipe away that data with zeros. To do that, you follow the same steps above to enter maskrom mode and then write a binary file that consists of all zeros.
- Create the binary file dd if=/dev/zero of=zero.bin bs=1M count=16
- Flash the flash helper db file: rkdeveloptool db rk3399_loader_spinor_v1.15.114.bin. If successful, the output should read Downloading bootloader succeeded.
- Flash the new SPI binary: rkdeveloptool wl 0 zero.bin. If successful, the output should read: Write LBA from file (100%).
- Test the installation: rkdeveloptool td. If successful, output should read Reset Device OK.
- Run rkdeveloptool rd to reboot your Pinebook Pro.
https://wiki.pine64.org/index.php/Pinebo...ut_the_SPI
It is therefore possible to deactivate SPIFlash by overwriting the memory (software deactivation)
However, it is necessary to check on U-Boot is installed on the emmc or SD card, before overwriting the SPIFlash memory, otherwise the Pinebook pro will not restart.
For this I can, "short pin 6 of the SPI flash to GND and boot" and see if the pinebook pro reboots.
Do you think this is the right solution?
Pinebook Pro, standard config (Manjaro)